Fluorescence method of studying void closure kinetics during film formation from high-T latex particles

Pekcan O., Canpolat M.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.66, sa.4, ss.655-661, 1997 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 66 Sayı: 4
  • Basım Tarihi: 1997
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.655-661
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

Void closure process due to viscous flow was studied during film formation from high-T latex particles. Steady-state fluorescence and photon transmission techniques were used to probe the evolution of optical clarity during film formation. The latex films were prepared from pyrene (P)-labeled poly( methyl methacrylate) particles and annealed in 10-min time intervals above glass transition temperature. Fluorescence intensity from P was measured after each annealing step. A relation for void closure time versus fluorescence intensity was derived, using the Vogel-Fulcher equation. Viscosity constant B was measured from the above relation and found to be as 11 X 10(3) K. (C) 1997 John Wiley & Sons, Inc.